Harriet Hamsterbone is trying to be the perfect princess, but life at the royal palace is dull. When she learns from her parents that she is cursed to prick her finger on a hamster wheel at the age of twelve and fall into a deep slumber, Harriet believes she is invincible until that age and sets off on an adventure with her friend Mumfrey the quail. However, when things go wrong at home, she must find a prince to help her set things right.

Humphrey the classroom hamster has adventures going to the library, learning about the ocean, and sailing across a pond on a sailboat.

When summer arrives, Humphrey, the pet hamster of Longfellow School's Room twenty-six, is surprised and pleased to learn that he will be going to Camp Happy Hollow.

Humphrey, the pet hamster of Longfellow School's Room 26, learns that his classroom is full of secrets, the most important of which is that a student will be leaving soon.

When Humphrey the hamster returns to Mrs. Brisbane's class after the winter break, a new class pet and some other surprises give him an opportunity to reflect on the meaning of friendship.

While continuing to help his classmates solve their problems, Humphrey, pet hamster of Longfellow School's Room 26, faces many surprises, like rolling in a hamster ball, a substitute janitor who might be an alien, and the possibility of Mrs. Brisbane retiring.

Og the frog is a classroom pet who is living the high-life with children who feed him fat crickets and a fuzzy hamster as his next-door neighbor. But one day, there is discussion about returning Og to the swamp. Not wanting to be bullied by the bull frogs or deal with snakes, Og decides to make himself the best class pet ever.

Twelve-year-old Al Chaudhury discovers his late dad's time machine and travels back to 1984 with his pet hamster to prevent the go-kart accident that killed his father.

Humphrey, the pet hamster of Longfellow School's Room 26, relates the ups and downs experienced by his human classmates as they begin a project to create a model town complete with houses and community services.

Harriet the hamster is desperate to be adopted, so she gives her sister Patricia and herself glamorous makeovers in hopes they will get more attention when Hamster World has its huge annual sale.